Setting alarm

I have read on several forums people are having problems with their alarm clock not working.  For me, my alarm has always worked(and I hate mornings).  I hit my clock on home screen, then choose alarm clock and I hit the first listing called description. I set the desired (really undesired) time to get up, then I go down to alarm sound and choose the least offensive alarm sound. I have light chosen and hit ok.  I also have vibrate checked.  You can also click on the repeat to see what days you want checked, I have mon thru fri checked.  I then hit done. It goes back to the description screen and I see a green check.  My alarm goes off as programmed.  Now I have a case on my phone so the speaker does not lay directly on a surface and get muted. 

 
Thanks for the info, still not working.
I even downloaded another alarm app and will not ring, just the virbrator.
Any thoughts?
Just started working, go figure.
Jim in Sequim

Are you using a custom sound file or one included with the phone? People are reporting problems using custom sounds (sounds installed on their SD card) but the pre-installed sound files are working.

Thanks for advising... appreciate it